Semi-automatic turret-lathe.



M. H. BLANOKE.

SEMI-AUTOMATIC TURRET LATHE.

APPLICATION FILED NOV. 30, 1908.

Patented June 21, 1910.

2 SHEETS-SHEET 1.

M. H. BLANGKE.

SEMI-AUTOMATIC TURRET LATHE.

APPLICATION FILED NOV.30, 1908.

Patented June 21,1910.

2 SHEETS-SHEET 2 dent of Merseburg,

unrrnn s ratus earner ornron.

MARTIN H. BLANCKE, OF MERSEBUBG, GERMANY.

SEMI-AUTOMATIC TURRET-LATHE.

Application filed November 30, 1908.

To all whom 'it may concern:

Be it known that I, MARTIN H. BLANCKE, a citizen of the German Empire,and a resi- Gerniany, have invented certain new and useful Improvementsin Semi-Automatic Turret-Lathes, of which the following is aspecification.

"in multiple-spindle turret 10.

This invention consists in an improvement lathes 'in which the spindlesare alternately coupled with two gears. In the present invention bothgears are arranged within the tur retehead, and are operated by asingleshaft,- the clutches for coupling the gears to the said shaftbeing likewise arranged within the said head, and the clutch-leversextending out of the head being operated by means of an inclinedslide-way which is fixed to the bed but has a movable part for thepurpose of releasing the levers; the advance of the traversing headisstarted by hand, all the subsequent operations in the cycle beingautomatically initiated by the traversing head.

A construction embodying these improve- 1 ments is shown in the annexeddrawings, in

-- of the driving gears in bearing 13. The

which,-Figure 1 is a longitudinal section of the lathe; Figs. 2, 3 and 4are cross sections on the lines A-A, B-B, and C-C, respectively. Fig. 5is a diagram of one the turret-head. The turret-head, which in theconstruction shown has six spindles 10, consists of two bearing-plates11 connected to each other by a short cylinder 12, and is rotatable if aturret-head is rotated by means of a worm 1 1 actuated by a pulley 15.The intermittent locking of the turret-head is effected by means of apin 16 slidable in the bearing 13, the said pin being adapted to engagerecesses 17 in a ring 17 fixed to the turret-head; The means foractuating this pin will be described hereinafter.

The spindles are operated from a central driving shaft 18, on which aremounted two .wheels 19 and 20. On each spindle 10 there are two loosewheels 21 and 22 and a slidable clutch 23. The wheels 21 are connectedby wheels 24: shown in dotted lines in Fig. 2, to the wheel 19, and thewheels 22 mesh directly with the wheel 20. Each of the clutches has alever 25 pivoted to it on a pin 26, and the levers 25 project throughapertures in the cylinder 12. The clutch levers 25 are attached tosprings 27, which (Figs. 1, 2

This is necessary for Serial No. 465,134.

tend to hold them in engagement with the wheels 22. During the rotationof the turret-head each clutch-lever slides between a and 2 (Fig. 2) onan inclined guide-way 28, and is thus operated to engage the clutch withthe respective wheel 21 so that the rotation of the spindle is reversed.

the operation of screweutting. The left-hand end (Fig. 2) of theinclined guide-way consists of a vertically movable slide 29, which isthrust upward by a spring 30. The downward movement of this slide isproduced by aflever 31 pivoted at'32. This lever is actuated by means ofan abutment 34: adjustable on a slidable bar 33, when the clutch-leveris to be released and the spindle is to be re coupled with a wheel 22.The bearing 13 is also provided with a slide-way 35 (Fig. 2), thepurposeof which is to so move each clutch-lever at y that the respectiveclutch 23 is moved to its central position and the spindle uncoupledfrom both wheels 21 and 22. The finished work is removed from thespindles in this position, and replaced by blanks.

The tool-carrier or traversing head 36 is slidable on the bed in theknown manner and is actuated by a spindle 37, which receives movementfrom the shaft 41 by means of a train of gear wheels 38 and alternativetrains of gears 39, 39, and d0, 40*. The shaft 41 is provided withdriving pulleys or other driving means. A shaft 43, on which are mountedthe wheels 39 and 40, carries a clutch 14 adapted to be displaced bymeans of a lever pivoted at 15 onthe bed. A-lever 18 fixed to the pivot45 is adapted to be actuated by means of adjustable abutmeuts 49 and 50on the traversing head 36. An arm 51 of the lever 48 is rovided with ntches which can be engage by a spring-pressed pin 52. An arm 54:projecting from the lever 48 is weighted by means of a weight 53, orconnected to a spring. The bar 33 is adjustably connected to an arm 55of the tool-car rier. Near the pin 16 the bar 33 has a pivoted finger56, which is normally held against an abutment 57 on the bar, by aspring 58.

At 59, on the bed, there is pivoted a bellcrank 60 connected to a clutch62 slidable on the worm-shaft 61; to this bell-crank is pivoted the pin16 (Fig. 3).

The action of the lathe is as follows: When the traversing head reachesits righthand end position, the abutment 4:9 places 1 I lever to theleft; the

"- *L,.caus ed to enga *.threaded spind nected to the main shaft41 bymeans of the I wheels 38, 39 and 3,9.

the lever '48 in the position indicated by dotted lmes in Fig.1. Theclutch 44 is then so placed? that .it clutches neither of the wheels39,and 40, and the traversing head, {has no movement. ,Wheh thetraversing head is to advanced. e., move toward the turret head, thelever 48 is moved by hand to the right, into the osition indicated bysolid lines in Fig. 1, an the clutch 44 is thus e the gear wheel 39. Thee or screw 37 .is thus con- When the traversing head has moved so farforward, that its on the lever 48,'the latter is 'movedrback into theposition indicated by dotted lines,land.the welght 53 then rocks theclutch 44 is thus caused.

to engagethe wheel 40, and the direction of The -rotation of the spindle37 is reversed. The

traversing head thereupon .makes its return movement. Before theadvancin tools come v intocontact with the Work on t e spindles 10. ashoulder 63 of the bar 33, advancing 2'5 with the tool-carrienlis pushedunder. the free'end of' the bell-crank 60 (Figs. '1 and 3), and thuslocks the pin 16 in one of the. notches of the ring 17, so that theturret head cannot rotate While the tool is at Work.-

' At the end of the advance of the'traversing head-the abutment 34 actson the lever '31 so that the clutch-lever-25 abuttin against the .upperendof the slide 29 is reheased and is actuated by its spring 27 to movethe re- 35 spective clutch 23 into engagement with the.

wheel 22 so that the spindle 10 carrying the work which has beenthreadedhas left hand rotation when the movement of the traversing head isreversed, in order that the cutter 40 can be vWithdrawn from" the threadcut \Vhen the traversing head reaches the posttion in which the tools nolonger engage the v work, the finger' 56' depresses the free end of thebell crank 60 so that the in-16 is withdrawn from the'ring l7, and t eclutch .62 is caused to engage the Worm l4. The

' turret-head is thus released and caused to rotate. Just before thetraversing head ,-reaches its right hand end osition, the er 56 releasesthe bell cran "60, and the spring 64 (Figs. 1 and 3), causes the pin 16h to reengage the ring 17, the clutch 62' being at the same timedisengaa 14, so that-,the turret-hea ceasesto rotate.

ment, normally element from the turret bar carried ed from the'wormsWhat I claim and ters Patent is 1. In a turret lathe, the combinationwith a reciprocating tool head, of. an intermittently rotatable turrethead, a lockin eleengaging said turret sad, so and htlding the-sameagainst rotation and means carried by thetool head and reciprohabletherewith to disen age said locking W ead, whereby the turret hea'disfree to rotate. v 5 2.' Ina turret lathe, the combination withareciprocating tool head and its driving mechanism, and a turret head,,ofa slidable bythe tool head, means for automatically releasing 'theturret head, and "means for intermittently revolving the turret head,said means being thrown into action by the said slidablebar.

3; In a turret lathe, the combination with a [001 head, a sliding barcarried thereby, ofa turret head, having a recessed rim,'a pawl adaptedto engage said recessed rim and lock the1 ti1nret head against movement,gearing ,for rotating t-he turret head, a'clutch, and

esire to secure by Let 55 levers, connected'to said pawl and'clutch, 30-

.said-slidingbiiiu' adapted to operate said leverswherebythfspavvl willbe disenga ed fromtherecessed rim, and the clutch. coup ed to said gearso'thatthe turret head will be revolved. Q 1 V 35 .4. In a turret-lathe,the combination with a tool head and aregulating lever, gearincontrolled by said lever, for moving the tool head, of adjustableabutments carried. by said tool head constructed andarranged to .9 throwthe regulating-lever, into a' neutralpos'ition t6 uncouple the gears,and a weight secured to the regulating lever, to complete the throw ofthe 'lever, in onetdirection,

whereby the. gears will be coupled and. the

- direction .of movement of the tool head re-,

versed, and a locking element adapted to engage the lower end of theregulating lever, whereby it will be held against accidentaldisplacement. u

The foregoing specification signed at Berlink, Germany, this twelfth dayof N ovember,

I v MAR-TIN H- LANGKE. In presence of 3 I HENRY HASPER,

l mM HAUPT.

